Hi guys,

I have a question, I want to know how i can specify the domain of the following function? can anyone help me guys?

f(x) = Attachment 30813

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- May 1st 2014, 10:06 AMmiladcephHow can i solve this function?
Hi guys,

I have a question, I want to know how i can specify the domain of the following function? can anyone help me guys?

f(x) = Attachment 30813 - May 1st 2014, 10:21 AMHallsofIvyRe: How can i solve this function?
I presume you know that you cannot divide by 0 so where is $\displaystyle 4- x^2= 0$? Also, you cannot take the square root of a negative number. A fraction is positive if both numerator and denominator are positive or if both numerator and denominator are negative. So if x> 0 where is [itex]4- x^2[/itex] also positive? If x< 0 is where is [itex]4- x^2[/itex]?

- May 2nd 2014, 09:18 AMprasumRe: How can i solve this function?
domain would be (-infinity,-2)U[0,2)

easy prob find roots of numerator and denominator that come out to be 0,2,-2 now plot on number line with alternate signs with given intervals where positive thats ur domain part then union it